That hamstring injury (and an odd heel wiggle on the same leg) had my curiosity up - wondering if there was an imbalance and how bad it might be. I was glad to see it wasn't significant.
I needed a crank and wanted (another) power meter, so the Shimano/Stages L/R crank fit the bill. The 3-sec and average L/R data fields will not be visible on rides... that would suck the fun out of any ride.
And yeah - I know I don't "need" a L/R power meter. I also don't "need" a power meter... or carbon bars, carbon seat post, carbon frame, carbon wheels, five bikes, etc. I think most of us left "need" behind a long time ago.